<script lang="ts" setup name="XtxNumbox">
const props = defineProps({
  modelValue: {
    type: Number,
    required: true
  },
  min: {
    type: Number,
    default: 1
  },
  max: {
    type: Number,
    default: 10
  },
  isShowLabel: {
    type: Boolean,
    default: true
  }
})
const emits = defineEmits<{
  (e: 'update:modelValue', s: number): void
}>()
// 设置modelValue的值
const setModelValue = (step: number) => {
  let result = props.modelValue + step
  // 不能小于min
  if (result < props.min) {
    result = props.min
  }
  //   不能大于max
  if (result > props.max) {
    result = props.max
  }

  emits('update:modelValue', result)
}
</script>
<script lang="ts">
export default {
  name: 'XtxNumbox'
}
</script>
<template>
  <div class="xtx-numbox">
    <div class="label" v-if="isShowLabel">
      <slot>
        数量
      </slot>
    </div>
    <div class="numbox">
      <a href="javascript:;" @click="setModelValue(-1)">-</a>
      <input type="text" readonly :value="modelValue" />
      <a href="javascript:;" @click="setModelValue(1)">+</a>
    </div>
  </div>
</template>

<style scoped lang="less">
.xtx-numbox {
  display: flex;
  align-items: center;
  .label {
    width: 60px;
    color: #999;
    padding-left: 10px;
  }
  .numbox {
    width: 120px;
    height: 30px;
    border: 1px solid #e4e4e4;
    display: flex;
    > a {
      width: 29px;
      line-height: 28px;
      text-align: center;
      background: #f8f8f8;
      font-size: 16px;
      color: #666;
      &:first-of-type {
        border-right: 1px solid #e4e4e4;
      }
      &:last-of-type {
        border-left: 1px solid #e4e4e4;
      }
    }
    > input {
      width: 60px;
      padding: 0 5px;
      text-align: center;
      color: #666;
    }
  }
}
</style>
